Ok, so after putting it off for a while to try to regroup my thoughts and what I've done. I finally got the motor back out and Just Now pulled the back head off again. And the gasket IS correct. So why don't I have oil to the top of the motor?? Checked the oil pump and it looks fine.

The oil gallery isn't exposed for something to fall into. I'm thinking it's the oil pump, it almost has to be. That's the next party I'm gonna throw at it and hope it fixed the problem. Along with another head gasket.

Ok, this is going to sound completely messed up (I want to use another term there, but the board auto-corrects). Anyway, early N*'s had an issue I recall with an oil pressure relief valve on the oil pump. Sometimes it gets clogged with debris. So there was a "Force priming" procedure GM called out. I'm not saying that this is the issue as it was prone to earlier N*'s, but at this point does it hurt to try??

This process is from GM to force prime the pump and relieve that pressure.

Quote:

To remove particles from the relief valve in the oil pump, perform the following procedure:

1. Add an ADDITIONAL 10 to 12 quarts (liters) of engine oil to the engine. This will immerse the pump completely in oil.

2. Start the engine and repeatedly open the throttle (rev the engine) from idle to 3500 rpm. This will allow the pump to prime; cycling the relief valve forces any debris from the relief valve.

Important : Do not operate the engine above 3500 rpm. Doing so will aerate the engine oil and/or force excess engine oil into the PCV system. DO NOT DRIVE THE VEHICLE while the additional oil is in the engine.

After the engine has sufficient oil pressure, any valvetrain noise associated with this low oil pressure condition should not be evident upon restarting the vehicle and the low oil pressure and malfunction indicator lamp (service engine soon) messages should not remain illuminated.

4. Add 7 quarts of engine oil and check the oil level. Make sure the vehicle is on a level surface and the engine operating temperature is 1OO°C when checking the oil level with the engine stopped for 15-20 seconds.

Yep changed the oil and filter before start up after doing the head stud and gasket rebuild. Only thing I can think is the oil pump much have gotten damaged when I head the balancer installed to deep, but I think it was only to deep by an 1/8 or so at the most. That's my only thoughts on why. I did change the oil pressure sensor also because I broke the original removing the head and exhaust manifold at the same time. But even if the pressure switch is bad ( outta the box) it still wouldn't make the oil pump not work.

So...... After putting this piece of crap motor back together again.... With a new oil pump ($165.00) and a new head gasket ( $35.00) and all the time and energy, it runs. But NO oil again. I had pressure and oil to the top of the motor for a little bit at first start up and running. But now nothing. It ran for about 5 min with good pressure and I thought I had it figured out. But heck no. Now what????? I'm totally tired of working on this thing and done with it. Someone come buy it. $1500.00 I want this thing out of my shop.

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